American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2017 > 216 > 5 > 506.e1-506.e14
American Journal of Obstetrics and Gynecology > 2017 > 217 > 3 > 340.e1-340.e6
American Journal of Obstetrics and Gynecology > 2017 > 217 > 5 > 596.e1-596.e7
American Journal of Obstetrics and Gynecology > 2017 > 217 > 5 > 522-526